sys/dev/drm2/radeon/radeon_display.c

   1 /*
   2  * Copyright 2007-8 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors: Dave Airlie
  24  *          Alex Deucher
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <dev/drm2/drmP.h>
  31 #include <dev/drm2/radeon/radeon_drm.h>
  32 #include "radeon.h"
  33
  34 #include "atom.h"
  35
  36 #include <dev/drm2/drm_crtc_helper.h>
  37 #include <dev/drm2/drm_edid.h>
  38
  39 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
  40 {
  41         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  42         struct drm_device *dev = crtc->dev;
  43         struct radeon_device *rdev = dev->dev_private;
  44         int i;
  45
  46         DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
  47         WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
  48
  49         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  50         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  51         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  52
  53         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  54         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  55         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  56
  57         WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
  58         WREG32(AVIVO_DC_LUT_RW_MODE, 0);
  59         WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
  60
  61         WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
  62         for (i = 0; i < 256; i++) {
  63                 WREG32(AVIVO_DC_LUT_30_COLOR,
  64                              (radeon_crtc->lut_r[i] << 20) |
  65                              (radeon_crtc->lut_g[i] << 10) |
  66                              (radeon_crtc->lut_b[i] << 0));
  67         }
  68
  69         WREG32(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id);
  70 }
  71
  72 static void dce4_crtc_load_lut(struct drm_crtc *crtc)
  73 {
  74         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  75         struct drm_device *dev = crtc->dev;
  76         struct radeon_device *rdev = dev->dev_private;
  77         int i;
  78
  79         DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
  80         WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
  81
  82         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  83         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  84         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  85
  86         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  87         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  88         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  89
  90         WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
  91         WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
  92
  93         WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
  94         for (i = 0; i < 256; i++) {
  95                 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
  96                        (radeon_crtc->lut_r[i] << 20) |
  97                        (radeon_crtc->lut_g[i] << 10) |
  98                        (radeon_crtc->lut_b[i] << 0));
  99         }
 100 }
 101
 102 static void dce5_crtc_load_lut(struct drm_crtc *crtc)
 103 {
 104         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 105         struct drm_device *dev = crtc->dev;
 106         struct radeon_device *rdev = dev->dev_private;
 107         int i;
 108
 109         DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
 110
 111         WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
 112                (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
 113                 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
 114         WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
 115                NI_GRPH_PRESCALE_BYPASS);
 116         WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
 117                NI_OVL_PRESCALE_BYPASS);
 118         WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
 119                (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
 120                 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
 121
 122         WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
 123
 124         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
 125         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
 126         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
 127
 128         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
 129         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
 130         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
 131
 132         WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
 133         WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
 134
 135         WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
 136         for (i = 0; i < 256; i++) {
 137                 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
 138                        (radeon_crtc->lut_r[i] << 20) |
 139                        (radeon_crtc->lut_g[i] << 10) |
 140                        (radeon_crtc->lut_b[i] << 0));
 141         }
 142
 143         WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
 144                (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 145                 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 146                 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 147                 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
 148         WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
 149                (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
 150                 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
 151         WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
 152                (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
 153                 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
 154         WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
 155                (NI_OUTPUT_CSC_GRPH_MODE(NI_OUTPUT_CSC_BYPASS) |
 156                 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
 157         /* XXX match this to the depth of the crtc fmt block, move to modeset? */
 158         WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
 159
 160 }
 161
 162 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
 163 {
 164         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 165         struct drm_device *dev = crtc->dev;
 166         struct radeon_device *rdev = dev->dev_private;
 167         int i;
 168         uint32_t dac2_cntl;
 169
 170         dac2_cntl = RREG32(RADEON_DAC_CNTL2);
 171         if (radeon_crtc->crtc_id == 0)
 172                 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
 173         else
 174                 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
 175         WREG32(RADEON_DAC_CNTL2, dac2_cntl);
 176
 177         WREG8(RADEON_PALETTE_INDEX, 0);
 178         for (i = 0; i < 256; i++) {
 179                 WREG32(RADEON_PALETTE_30_DATA,
 180                              (radeon_crtc->lut_r[i] << 20) |
 181                              (radeon_crtc->lut_g[i] << 10) |
 182                              (radeon_crtc->lut_b[i] << 0));
 183         }
 184 }
 185
 186 void radeon_crtc_load_lut(struct drm_crtc *crtc)
 187 {
 188         struct drm_device *dev = crtc->dev;
 189         struct radeon_device *rdev = dev->dev_private;
 190
 191         if (!crtc->enabled)
 192                 return;
 193
 194         if (ASIC_IS_DCE5(rdev))
 195                 dce5_crtc_load_lut(crtc);
 196         else if (ASIC_IS_DCE4(rdev))
 197                 dce4_crtc_load_lut(crtc);
 198         else if (ASIC_IS_AVIVO(rdev))
 199                 avivo_crtc_load_lut(crtc);
 200         else
 201                 legacy_crtc_load_lut(crtc);
 202 }
 203
 204 /** Sets the color ramps on behalf of fbcon */
 205 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 206                               u16 blue, int regno)
 207 {
 208         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 209
 210         radeon_crtc->lut_r[regno] = red >> 6;
 211         radeon_crtc->lut_g[regno] = green >> 6;
 212         radeon_crtc->lut_b[regno] = blue >> 6;
 213 }
 214
 215 /** Gets the color ramps on behalf of fbcon */
 216 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 217                               u16 *blue, int regno)
 218 {
 219         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 220
 221         *red = radeon_crtc->lut_r[regno] << 6;
 222         *green = radeon_crtc->lut_g[regno] << 6;
 223         *blue = radeon_crtc->lut_b[regno] << 6;
 224 }
 225
 226 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 227                                   u16 *blue, uint32_t start, uint32_t size)
 228 {
 229         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 230         int end = (start + size > 256) ? 256 : start + size, i;
 231
 232         /* userspace palettes are always correct as is */
 233         for (i = start; i < end; i++) {
 234                 radeon_crtc->lut_r[i] = red[i] >> 6;
 235                 radeon_crtc->lut_g[i] = green[i] >> 6;
 236                 radeon_crtc->lut_b[i] = blue[i] >> 6;
 237         }
 238         radeon_crtc_load_lut(crtc);
 239 }
 240
 241 static void radeon_crtc_destroy(struct drm_crtc *crtc)
 242 {
 243         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 244
 245         drm_crtc_cleanup(crtc);
 246         free(radeon_crtc, DRM_MEM_DRIVER);
 247 }
 248
 249 /*
 250  * Handle unpin events outside the interrupt handler proper.
 251  */
 252 static void radeon_unpin_work_func(void *arg, int pending)
 253 {
 254         struct radeon_unpin_work *work = arg;
 255         int r;
 256
 257         /* unpin of the old buffer */
 258         r = radeon_bo_reserve(work->old_rbo, false);
 259         if (likely(r == 0)) {
 260                 r = radeon_bo_unpin(work->old_rbo);
 261                 if (unlikely(r != 0)) {
 262                         DRM_ERROR("failed to unpin buffer after flip\n");
 263                 }
 264                 radeon_bo_unreserve(work->old_rbo);
 265         } else
 266                 DRM_ERROR("failed to reserve buffer after flip\n");
 267
 268         drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
 269         free(work, DRM_MEM_DRIVER);
 270 }
 271
 272 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
 273 {
 274         struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
 275         struct radeon_unpin_work *work;
 276         struct drm_pending_vblank_event *e;
 277         struct timeval now;
 278         unsigned long flags;
 279         u32 update_pending;
 280         int vpos, hpos;
 281
 282         DRM_SPINLOCK_IRQSAVE(&rdev->ddev->event_lock, flags);
 283         work = radeon_crtc->unpin_work;
 284         if (work == NULL ||
 285             (work->fence && !radeon_fence_signaled(work->fence))) {
 286                 DRM_SPINUNLOCK_IRQRESTORE(&rdev->ddev->event_lock, flags);
 287                 return;
 288         }
 289         /* New pageflip, or just completion of a previous one? */
 290         if (!radeon_crtc->deferred_flip_completion) {
 291                 /* do the flip (mmio) */
 292                 update_pending = radeon_page_flip(rdev, crtc_id, work->new_crtc_base);
 293         } else {
 294                 /* This is just a completion of a flip queued in crtc
 295                  * at last invocation. Make sure we go directly to
 296                  * completion routine.
 297                  */
 298                 update_pending = 0;
 299                 radeon_crtc->deferred_flip_completion = 0;
 300         }
 301
 302         /* Has the pageflip already completed in crtc, or is it certain
 303          * to complete in this vblank?
 304          */
 305         if (update_pending &&
 306             (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id,
 307                                                                &vpos, &hpos)) &&
 308             ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
 309              (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
 310                 /* crtc didn't flip in this target vblank interval,
 311                  * but flip is pending in crtc. Based on the current
 312                  * scanout position we know that the current frame is
 313                  * (nearly) complete and the flip will (likely)
 314                  * complete before the start of the next frame.
 315                  */
 316                 update_pending = 0;
 317         }
 318         if (update_pending) {
 319                 /* crtc didn't flip in this target vblank interval,
 320                  * but flip is pending in crtc. It will complete it
 321                  * in next vblank interval, so complete the flip at
 322                  * next vblank irq.
 323                  */
 324                 radeon_crtc->deferred_flip_completion = 1;
 325                 DRM_SPINUNLOCK_IRQRESTORE(&rdev->ddev->event_lock, flags);
 326                 return;
 327         }
 328
 329         /* Pageflip (will be) certainly completed in this vblank. Clean up. */
 330         radeon_crtc->unpin_work = NULL;
 331
 332         /* wakeup userspace */
 333         if (work->event) {
 334                 e = work->event;
 335                 e->event.sequence = drm_vblank_count_and_time(rdev->ddev, crtc_id, &now);
 336                 e->event.tv_sec = now.tv_sec;
 337                 e->event.tv_usec = now.tv_usec;
 338                 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 339                 drm_event_wakeup(&e->base);
 340         }
 341         DRM_SPINUNLOCK_IRQRESTORE(&rdev->ddev->event_lock, flags);
 342
 343         drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
 344         radeon_fence_unref(&work->fence);
 345         radeon_post_page_flip(work->rdev, work->crtc_id);
 346         taskqueue_enqueue(rdev->tq, &work->work);
 347 }
 348
 349 static int radeon_crtc_page_flip(struct drm_crtc *crtc,
 350                                  struct drm_framebuffer *fb,
 351                                  struct drm_pending_vblank_event *event)
 352 {
 353         struct drm_device *dev = crtc->dev;
 354         struct radeon_device *rdev = dev->dev_private;
 355         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 356         struct radeon_framebuffer *old_radeon_fb;
 357         struct radeon_framebuffer *new_radeon_fb;
 358         struct drm_gem_object *obj;
 359         struct radeon_bo *rbo;
 360         struct radeon_unpin_work *work;
 361         unsigned long flags;
 362         u32 tiling_flags, pitch_pixels;
 363         u64 base;
 364         int r;
 365
 366         work = malloc(sizeof *work, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
 367         if (work == NULL)
 368                 return -ENOMEM;
 369
 370         work->event = event;
 371         work->rdev = rdev;
 372         work->crtc_id = radeon_crtc->crtc_id;
 373         old_radeon_fb = to_radeon_framebuffer(crtc->fb);
 374         new_radeon_fb = to_radeon_framebuffer(fb);
 375         /* schedule unpin of the old buffer */
 376         obj = old_radeon_fb->obj;
 377         /* take a reference to the old object */
 378         drm_gem_object_reference(obj);
 379         rbo = gem_to_radeon_bo(obj);
 380         work->old_rbo = rbo;
 381         obj = new_radeon_fb->obj;
 382         rbo = gem_to_radeon_bo(obj);
 383
 384         mtx_lock(&rbo->tbo.bdev->fence_lock);
 385         if (rbo->tbo.sync_obj)
 386                 work->fence = radeon_fence_ref(rbo->tbo.sync_obj);
 387         mtx_unlock(&rbo->tbo.bdev->fence_lock);
 388
 389         TASK_INIT(&work->work, 0, radeon_unpin_work_func, work);
 390
 391         /* We borrow the event spin lock for protecting unpin_work */
 392         DRM_SPINLOCK_IRQSAVE(&dev->event_lock, flags);
 393         if (radeon_crtc->unpin_work) {
 394                 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
 395                 r = -EBUSY;
 396                 goto unlock_free;
 397         }
 398         radeon_crtc->unpin_work = work;
 399         radeon_crtc->deferred_flip_completion = 0;
 400         DRM_SPINUNLOCK_IRQRESTORE(&dev->event_lock, flags);
 401
 402         /* pin the new buffer */
 403         DRM_DEBUG_DRIVER("flip-ioctl() cur_fbo = %p, cur_bbo = %p\n",
 404                          work->old_rbo, rbo);
 405
 406         r = radeon_bo_reserve(rbo, false);
 407         if (unlikely(r != 0)) {
 408                 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
 409                 goto pflip_cleanup;
 410         }
 411         /* Only 27 bit offset for legacy CRTC */
 412         r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
 413                                      ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
 414         if (unlikely(r != 0)) {
 415                 radeon_bo_unreserve(rbo);
 416                 r = -EINVAL;
 417                 DRM_ERROR("failed to pin new rbo buffer before flip\n");
 418                 goto pflip_cleanup;
 419         }
 420         radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
 421         radeon_bo_unreserve(rbo);
 422
 423         if (!ASIC_IS_AVIVO(rdev)) {
 424                 /* crtc offset is from display base addr not FB location */
 425                 base -= radeon_crtc->legacy_display_base_addr;
 426                 pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
 427
 428                 if (tiling_flags & RADEON_TILING_MACRO) {
 429                         if (ASIC_IS_R300(rdev)) {
 430                                 base &= ~0x7ff;
 431                         } else {
 432                                 int byteshift = fb->bits_per_pixel >> 4;
 433                                 int tile_addr = (((crtc->y >> 3) * pitch_pixels +  crtc->x) >> (8 - byteshift)) << 11;
 434                                 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
 435                         }
 436                 } else {
 437                         int offset = crtc->y * pitch_pixels + crtc->x;
 438                         switch (fb->bits_per_pixel) {
 439                         case 8:
 440                         default:
 441                                 offset *= 1;
 442                                 break;
 443                         case 15:
 444                         case 16:
 445                                 offset *= 2;
 446                                 break;
 447                         case 24:
 448                                 offset *= 3;
 449                                 break;
 450                         case 32:
 451                                 offset *= 4;
 452                                 break;
 453                         }
 454                         base += offset;
 455                 }
 456                 base &= ~7;
 457         }
 458
 459         DRM_SPINLOCK_IRQSAVE(&dev->event_lock, flags);
 460         work->new_crtc_base = base;
 461         DRM_SPINUNLOCK_IRQRESTORE(&dev->event_lock, flags);
 462
 463         /* update crtc fb */
 464         crtc->fb = fb;
 465
 466         r = drm_vblank_get(dev, radeon_crtc->crtc_id);
 467         if (r) {
 468                 DRM_ERROR("failed to get vblank before flip\n");
 469                 goto pflip_cleanup1;
 470         }
 471
 472         /* set the proper interrupt */
 473         radeon_pre_page_flip(rdev, radeon_crtc->crtc_id);
 474
 475         return 0;
 476
 477 pflip_cleanup1:
 478         if (unlikely(radeon_bo_reserve(rbo, false) != 0)) {
 479                 DRM_ERROR("failed to reserve new rbo in error path\n");
 480                 goto pflip_cleanup;
 481         }
 482         if (unlikely(radeon_bo_unpin(rbo) != 0)) {
 483                 DRM_ERROR("failed to unpin new rbo in error path\n");
 484         }
 485         radeon_bo_unreserve(rbo);
 486
 487 pflip_cleanup:
 488         DRM_SPINLOCK_IRQSAVE(&dev->event_lock, flags);
 489         radeon_crtc->unpin_work = NULL;
 490 unlock_free:
 491         DRM_SPINUNLOCK_IRQRESTORE(&dev->event_lock, flags);
 492         drm_gem_object_unreference_unlocked(old_radeon_fb->obj);
 493         radeon_fence_unref(&work->fence);
 494         free(work, DRM_MEM_DRIVER);
 495
 496         return r;
 497 }
 498
 499 static const struct drm_crtc_funcs radeon_crtc_funcs = {
 500         .cursor_set = radeon_crtc_cursor_set,
 501         .cursor_move = radeon_crtc_cursor_move,
 502         .gamma_set = radeon_crtc_gamma_set,
 503         .set_config = drm_crtc_helper_set_config,
 504         .destroy = radeon_crtc_destroy,
 505         .page_flip = radeon_crtc_page_flip,
 506 };
 507
 508 static void radeon_crtc_init(struct drm_device *dev, int index)
 509 {
 510         struct radeon_device *rdev = dev->dev_private;
 511         struct radeon_crtc *radeon_crtc;
 512         int i;
 513
 514         radeon_crtc = malloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
 515         if (radeon_crtc == NULL)
 516                 return;
 517
 518         drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
 519
 520         drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
 521         radeon_crtc->crtc_id = index;
 522         rdev->mode_info.crtcs[index] = radeon_crtc;
 523
 524 #if 0
 525         radeon_crtc->mode_set.crtc = &radeon_crtc->base;
 526         radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
 527         radeon_crtc->mode_set.num_connectors = 0;
 528 #endif
 529
 530         for (i = 0; i < 256; i++) {
 531                 radeon_crtc->lut_r[i] = i << 2;
 532                 radeon_crtc->lut_g[i] = i << 2;
 533                 radeon_crtc->lut_b[i] = i << 2;
 534         }
 535
 536         if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
 537                 radeon_atombios_init_crtc(dev, radeon_crtc);
 538         else
 539                 radeon_legacy_init_crtc(dev, radeon_crtc);
 540 }
 541
 542 static const char *encoder_names[37] = {
 543         "NONE",
 544         "INTERNAL_LVDS",
 545         "INTERNAL_TMDS1",
 546         "INTERNAL_TMDS2",
 547         "INTERNAL_DAC1",
 548         "INTERNAL_DAC2",
 549         "INTERNAL_SDVOA",
 550         "INTERNAL_SDVOB",
 551         "SI170B",
 552         "CH7303",
 553         "CH7301",
 554         "INTERNAL_DVO1",
 555         "EXTERNAL_SDVOA",
 556         "EXTERNAL_SDVOB",
 557         "TITFP513",
 558         "INTERNAL_LVTM1",
 559         "VT1623",
 560         "HDMI_SI1930",
 561         "HDMI_INTERNAL",
 562         "INTERNAL_KLDSCP_TMDS1",
 563         "INTERNAL_KLDSCP_DVO1",
 564         "INTERNAL_KLDSCP_DAC1",
 565         "INTERNAL_KLDSCP_DAC2",
 566         "SI178",
 567         "MVPU_FPGA",
 568         "INTERNAL_DDI",
 569         "VT1625",
 570         "HDMI_SI1932",
 571         "DP_AN9801",
 572         "DP_DP501",
 573         "INTERNAL_UNIPHY",
 574         "INTERNAL_KLDSCP_LVTMA",
 575         "INTERNAL_UNIPHY1",
 576         "INTERNAL_UNIPHY2",
 577         "NUTMEG",
 578         "TRAVIS",
 579         "INTERNAL_VCE"
 580 };
 581
 582 static const char *hpd_names[6] = {
 583         "HPD1",
 584         "HPD2",
 585         "HPD3",
 586         "HPD4",
 587         "HPD5",
 588         "HPD6",
 589 };
 590
 591 static void radeon_print_display_setup(struct drm_device *dev)
 592 {
 593         struct drm_connector *connector;
 594         struct radeon_connector *radeon_connector;
 595         struct drm_encoder *encoder;
 596         struct radeon_encoder *radeon_encoder;
 597         uint32_t devices;
 598         int i = 0;
 599
 600         DRM_INFO("Radeon Display Connectors\n");
 601         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 602                 radeon_connector = to_radeon_connector(connector);
 603                 DRM_INFO("Connector %d:\n", i);
 604                 DRM_INFO("  %s\n", drm_get_connector_name(connector));
 605                 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
 606                         DRM_INFO("  %s\n", hpd_names[radeon_connector->hpd.hpd]);
 607                 if (radeon_connector->ddc_bus) {
 608                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 609                                  radeon_connector->ddc_bus->rec.mask_clk_reg,
 610                                  radeon_connector->ddc_bus->rec.mask_data_reg,
 611                                  radeon_connector->ddc_bus->rec.a_clk_reg,
 612                                  radeon_connector->ddc_bus->rec.a_data_reg,
 613                                  radeon_connector->ddc_bus->rec.en_clk_reg,
 614                                  radeon_connector->ddc_bus->rec.en_data_reg,
 615                                  radeon_connector->ddc_bus->rec.y_clk_reg,
 616                                  radeon_connector->ddc_bus->rec.y_data_reg);
 617                         if (radeon_connector->router.ddc_valid)
 618                                 DRM_INFO("  DDC Router 0x%x/0x%x\n",
 619                                          radeon_connector->router.ddc_mux_control_pin,
 620                                          radeon_connector->router.ddc_mux_state);
 621                         if (radeon_connector->router.cd_valid)
 622                                 DRM_INFO("  Clock/Data Router 0x%x/0x%x\n",
 623                                          radeon_connector->router.cd_mux_control_pin,
 624                                          radeon_connector->router.cd_mux_state);
 625                 } else {
 626                         if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 627                             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 628                             connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 629                             connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 630                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 631                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 632                                 DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 633                 }
 634                 DRM_INFO("  Encoders:\n");
 635                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 636                         radeon_encoder = to_radeon_encoder(encoder);
 637                         devices = radeon_encoder->devices & radeon_connector->devices;
 638                         if (devices) {
 639                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 640                                         DRM_INFO("    CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 641                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 642                                         DRM_INFO("    CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 643                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 644                                         DRM_INFO("    LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 645                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 646                                         DRM_INFO("    DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 647                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 648                                         DRM_INFO("    DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 649                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 650                                         DRM_INFO("    DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
 651                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 652                                         DRM_INFO("    DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
 653                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 654                                         DRM_INFO("    DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
 655                                 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
 656                                         DRM_INFO("    DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
 657                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 658                                         DRM_INFO("    TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 659                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 660                                         DRM_INFO("    CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
 661                         }
 662                 }
 663                 i++;
 664         }
 665 }
 666
 667 static bool radeon_setup_enc_conn(struct drm_device *dev)
 668 {
 669         struct radeon_device *rdev = dev->dev_private;
 670         bool ret = false;
 671
 672         if (rdev->bios) {
 673                 if (rdev->is_atom_bios) {
 674                         ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
 675                         if (ret == false)
 676                                 ret = radeon_get_atom_connector_info_from_object_table(dev);
 677                 } else {
 678                         ret = radeon_get_legacy_connector_info_from_bios(dev);
 679                         if (ret == false)
 680                                 ret = radeon_get_legacy_connector_info_from_table(dev);
 681                 }
 682         } else {
 683                 if (!ASIC_IS_AVIVO(rdev))
 684                         ret = radeon_get_legacy_connector_info_from_table(dev);
 685         }
 686         if (ret) {
 687                 radeon_setup_encoder_clones(dev);
 688                 radeon_print_display_setup(dev);
 689         }
 690
 691         return ret;
 692 }
 693
 694 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
 695 {
 696         struct drm_device *dev = radeon_connector->base.dev;
 697         struct radeon_device *rdev = dev->dev_private;
 698         int ret = 0;
 699
 700         /* on hw with routers, select right port */
 701         if (radeon_connector->router.ddc_valid)
 702                 radeon_router_select_ddc_port(radeon_connector);
 703
 704         if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
 705             ENCODER_OBJECT_ID_NONE) {
 706                 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
 707
 708                 if (dig->dp_i2c_bus)
 709                         radeon_connector->edid = drm_get_edid(&radeon_connector->base,
 710                                                               dig->dp_i2c_bus->adapter);
 711         } else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
 712                    (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
 713                 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
 714
 715                 if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
 716                      dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus)
 717                         radeon_connector->edid = drm_get_edid(&radeon_connector->base,
 718                                                               dig->dp_i2c_bus->adapter);
 719                 else if (radeon_connector->ddc_bus && !radeon_connector->edid)
 720                         radeon_connector->edid = drm_get_edid(&radeon_connector->base,
 721                                                               radeon_connector->ddc_bus->adapter);
 722         } else {
 723                 if (radeon_connector->ddc_bus && !radeon_connector->edid)
 724                         radeon_connector->edid = drm_get_edid(&radeon_connector->base,
 725                                                               radeon_connector->ddc_bus->adapter);
 726         }
 727
 728         if (!radeon_connector->edid) {
 729                 if (rdev->is_atom_bios) {
 730                         /* some laptops provide a hardcoded edid in rom for LCDs */
 731                         if (((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_LVDS) ||
 732                              (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)))
 733                                 radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
 734                 } else
 735                         /* some servers provide a hardcoded edid in rom for KVMs */
 736                         radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
 737         }
 738         if (radeon_connector->edid) {
 739                 drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid);
 740                 ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid);
 741                 return ret;
 742         }
 743         drm_mode_connector_update_edid_property(&radeon_connector->base, NULL);
 744         return 0;
 745 }
 746
 747 /* avivo */
 748 static void avivo_get_fb_div(struct radeon_pll *pll,
 749                              u32 target_clock,
 750                              u32 post_div,
 751                              u32 ref_div,
 752                              u32 *fb_div,
 753                              u32 *frac_fb_div)
 754 {
 755         u32 tmp = post_div * ref_div;
 756
 757         tmp *= target_clock;
 758         *fb_div = tmp / pll->reference_freq;
 759         *frac_fb_div = tmp % pll->reference_freq;
 760
 761         if (*fb_div > pll->max_feedback_div)
 762                 *fb_div = pll->max_feedback_div;
 763         else if (*fb_div < pll->min_feedback_div)
 764                 *fb_div = pll->min_feedback_div;
 765 }
 766
 767 static u32 avivo_get_post_div(struct radeon_pll *pll,
 768                               u32 target_clock)
 769 {
 770         u32 vco, post_div, tmp;
 771
 772         if (pll->flags & RADEON_PLL_USE_POST_DIV)
 773                 return pll->post_div;
 774
 775         if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP) {
 776                 if (pll->flags & RADEON_PLL_IS_LCD)
 777                         vco = pll->lcd_pll_out_min;
 778                 else
 779                         vco = pll->pll_out_min;
 780         } else {
 781                 if (pll->flags & RADEON_PLL_IS_LCD)
 782                         vco = pll->lcd_pll_out_max;
 783                 else
 784                         vco = pll->pll_out_max;
 785         }
 786
 787         post_div = vco / target_clock;
 788         tmp = vco % target_clock;
 789
 790         if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP) {
 791                 if (tmp)
 792                         post_div++;
 793         } else {
 794                 if (!tmp)
 795                         post_div--;
 796         }
 797
 798         if (post_div > pll->max_post_div)
 799                 post_div = pll->max_post_div;
 800         else if (post_div < pll->min_post_div)
 801                 post_div = pll->min_post_div;
 802
 803         return post_div;
 804 }
 805
 806 #define MAX_TOLERANCE 10
 807
 808 void radeon_compute_pll_avivo(struct radeon_pll *pll,
 809                               u32 freq,
 810                               u32 *dot_clock_p,
 811                               u32 *fb_div_p,
 812                               u32 *frac_fb_div_p,
 813                               u32 *ref_div_p,
 814                               u32 *post_div_p)
 815 {
 816         u32 target_clock = freq / 10;
 817         u32 post_div = avivo_get_post_div(pll, target_clock);
 818         u32 ref_div = pll->min_ref_div;
 819         u32 fb_div = 0, frac_fb_div = 0, tmp;
 820
 821         if (pll->flags & RADEON_PLL_USE_REF_DIV)
 822                 ref_div = pll->reference_div;
 823
 824         if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 825                 avivo_get_fb_div(pll, target_clock, post_div, ref_div, &fb_div, &frac_fb_div);
 826                 frac_fb_div = (100 * frac_fb_div) / pll->reference_freq;
 827                 if (frac_fb_div >= 5) {
 828                         frac_fb_div -= 5;
 829                         frac_fb_div = frac_fb_div / 10;
 830                         frac_fb_div++;
 831                 }
 832                 if (frac_fb_div >= 10) {
 833                         fb_div++;
 834                         frac_fb_div = 0;
 835                 }
 836         } else {
 837                 while (ref_div <= pll->max_ref_div) {
 838                         avivo_get_fb_div(pll, target_clock, post_div, ref_div,
 839                                          &fb_div, &frac_fb_div);
 840                         if (frac_fb_div >= (pll->reference_freq / 2))
 841                                 fb_div++;
 842                         frac_fb_div = 0;
 843                         tmp = (pll->reference_freq * fb_div) / (post_div * ref_div);
 844                         tmp = (tmp * 10000) / target_clock;
 845
 846                         if (tmp > (10000 + MAX_TOLERANCE))
 847                                 ref_div++;
 848                         else if (tmp >= (10000 - MAX_TOLERANCE))
 849                                 break;
 850                         else
 851                                 ref_div++;
 852                 }
 853         }
 854
 855         *dot_clock_p = ((pll->reference_freq * fb_div * 10) + (pll->reference_freq * frac_fb_div)) /
 856                 (ref_div * post_div * 10);
 857         *fb_div_p = fb_div;
 858         *frac_fb_div_p = frac_fb_div;
 859         *ref_div_p = ref_div;
 860         *post_div_p = post_div;
 861         DRM_DEBUG_KMS("%d, pll dividers - fb: %d.%d ref: %d, post %d\n",
 862                       *dot_clock_p, fb_div, frac_fb_div, ref_div, post_div);
 863 }
 864
 865 /* pre-avivo */
 866 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
 867 {
 868         uint64_t mod;
 869
 870         n += d / 2;
 871
 872         mod = do_div(n, d);
 873         return n;
 874 }
 875
 876 void radeon_compute_pll_legacy(struct radeon_pll *pll,
 877                                uint64_t freq,
 878                                uint32_t *dot_clock_p,
 879                                uint32_t *fb_div_p,
 880                                uint32_t *frac_fb_div_p,
 881                                uint32_t *ref_div_p,
 882                                uint32_t *post_div_p)
 883 {
 884         uint32_t min_ref_div = pll->min_ref_div;
 885         uint32_t max_ref_div = pll->max_ref_div;
 886         uint32_t min_post_div = pll->min_post_div;
 887         uint32_t max_post_div = pll->max_post_div;
 888         uint32_t min_fractional_feed_div = 0;
 889         uint32_t max_fractional_feed_div = 0;
 890         uint32_t best_vco = pll->best_vco;
 891         uint32_t best_post_div = 1;
 892         uint32_t best_ref_div = 1;
 893         uint32_t best_feedback_div = 1;
 894         uint32_t best_frac_feedback_div = 0;
 895         uint32_t best_freq = -1;
 896         uint32_t best_error = 0xffffffff;
 897         uint32_t best_vco_diff = 1;
 898         uint32_t post_div;
 899         u32 pll_out_min, pll_out_max;
 900
 901         DRM_DEBUG_KMS("PLL freq %ju %u %u\n", (uintmax_t)freq, pll->min_ref_div, pll->max_ref_div);
 902         freq = freq * 1000;
 903
 904         if (pll->flags & RADEON_PLL_IS_LCD) {
 905                 pll_out_min = pll->lcd_pll_out_min;
 906                 pll_out_max = pll->lcd_pll_out_max;
 907         } else {
 908                 pll_out_min = pll->pll_out_min;
 909                 pll_out_max = pll->pll_out_max;
 910         }
 911
 912         if (pll_out_min > 64800)
 913                 pll_out_min = 64800;
 914
 915         if (pll->flags & RADEON_PLL_USE_REF_DIV)
 916                 min_ref_div = max_ref_div = pll->reference_div;
 917         else {
 918                 while (min_ref_div < max_ref_div-1) {
 919                         uint32_t mid = (min_ref_div + max_ref_div) / 2;
 920                         uint32_t pll_in = pll->reference_freq / mid;
 921                         if (pll_in < pll->pll_in_min)
 922                                 max_ref_div = mid;
 923                         else if (pll_in > pll->pll_in_max)
 924                                 min_ref_div = mid;
 925                         else
 926                                 break;
 927                 }
 928         }
 929
 930         if (pll->flags & RADEON_PLL_USE_POST_DIV)
 931                 min_post_div = max_post_div = pll->post_div;
 932
 933         if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 934                 min_fractional_feed_div = pll->min_frac_feedback_div;
 935                 max_fractional_feed_div = pll->max_frac_feedback_div;
 936         }
 937
 938         for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
 939                 uint32_t ref_div;
 940
 941                 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
 942                         continue;
 943
 944                 /* legacy radeons only have a few post_divs */
 945                 if (pll->flags & RADEON_PLL_LEGACY) {
 946                         if ((post_div == 5) ||
 947                             (post_div == 7) ||
 948                             (post_div == 9) ||
 949                             (post_div == 10) ||
 950                             (post_div == 11) ||
 951                             (post_div == 13) ||
 952                             (post_div == 14) ||
 953                             (post_div == 15))
 954                                 continue;
 955                 }
 956
 957                 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
 958                         uint32_t feedback_div, current_freq = 0, error, vco_diff;
 959                         uint32_t pll_in = pll->reference_freq / ref_div;
 960                         uint32_t min_feed_div = pll->min_feedback_div;
 961                         uint32_t max_feed_div = pll->max_feedback_div + 1;
 962
 963                         if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
 964                                 continue;
 965
 966                         while (min_feed_div < max_feed_div) {
 967                                 uint32_t vco;
 968                                 uint32_t min_frac_feed_div = min_fractional_feed_div;
 969                                 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
 970                                 uint32_t frac_feedback_div;
 971                                 uint64_t tmp;
 972
 973                                 feedback_div = (min_feed_div + max_feed_div) / 2;
 974
 975                                 tmp = (uint64_t)pll->reference_freq * feedback_div;
 976                                 vco = radeon_div(tmp, ref_div);
 977
 978                                 if (vco < pll_out_min) {
 979                                         min_feed_div = feedback_div + 1;
 980                                         continue;
 981                                 } else if (vco > pll_out_max) {
 982                                         max_feed_div = feedback_div;
 983                                         continue;
 984                                 }
 985
 986                                 while (min_frac_feed_div < max_frac_feed_div) {
 987                                         frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
 988                                         tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
 989                                         tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
 990                                         current_freq = radeon_div(tmp, ref_div * post_div);
 991
 992                                         if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
 993                                                 if (freq < current_freq)
 994                                                         error = 0xffffffff;
 995                                                 else
 996                                                         error = freq - current_freq;
 997                                         } else
 998                                                 error = abs(current_freq - freq);
 999                                         vco_diff = abs(vco - best_vco);
1000
1001                                         if ((best_vco == 0 && error < best_error) ||
1002                                             (best_vco != 0 &&
1003                                              ((best_error > 100 && error < best_error - 100) ||
1004                                               (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1005                                                 best_post_div = post_div;
1006                                                 best_ref_div = ref_div;
1007                                                 best_feedback_div = feedback_div;
1008                                                 best_frac_feedback_div = frac_feedback_div;
1009                                                 best_freq = current_freq;
1010                                                 best_error = error;
1011                                                 best_vco_diff = vco_diff;
1012                                         } else if (current_freq == freq) {
1013                                                 if (best_freq == -1) {
1014                                                         best_post_div = post_div;
1015                                                         best_ref_div = ref_div;
1016                                                         best_feedback_div = feedback_div;
1017                                                         best_frac_feedback_div = frac_feedback_div;
1018                                                         best_freq = current_freq;
1019                                                         best_error = error;
1020                                                         best_vco_diff = vco_diff;
1021                                                 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1022                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1023                                                            ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1024                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1025                                                            ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1026                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1027                                                         best_post_div = post_div;
1028                                                         best_ref_div = ref_div;
1029                                                         best_feedback_div = feedback_div;
1030                                                         best_frac_feedback_div = frac_feedback_div;
1031                                                         best_freq = current_freq;
1032                                                         best_error = error;
1033                                                         best_vco_diff = vco_diff;
1034                                                 }
1035                                         }
1036                                         if (current_freq < freq)
1037                                                 min_frac_feed_div = frac_feedback_div + 1;
1038                                         else
1039                                                 max_frac_feed_div = frac_feedback_div;
1040                                 }
1041                                 if (current_freq < freq)
1042                                         min_feed_div = feedback_div + 1;
1043                                 else
1044                                         max_feed_div = feedback_div;
1045                         }
1046                 }
1047         }
1048
1049         *dot_clock_p = best_freq / 10000;
1050         *fb_div_p = best_feedback_div;
1051         *frac_fb_div_p = best_frac_feedback_div;
1052         *ref_div_p = best_ref_div;
1053         *post_div_p = best_post_div;
1054         DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1055                       (long long)freq,
1056                       best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1057                       best_ref_div, best_post_div);
1058
1059 }
1060
1061 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
1062 {
1063         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1064
1065         if (radeon_fb->obj) {
1066                 drm_gem_object_unreference_unlocked(radeon_fb->obj);
1067         }
1068         drm_framebuffer_cleanup(fb);
1069         free(radeon_fb, DRM_MEM_DRIVER);
1070 }
1071
1072 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
1073                                                   struct drm_file *file_priv,
1074                                                   unsigned int *handle)
1075 {
1076         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1077
1078         return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
1079 }
1080
1081 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1082         .destroy = radeon_user_framebuffer_destroy,
1083         .create_handle = radeon_user_framebuffer_create_handle,
1084 };
1085
1086 int
1087 radeon_framebuffer_init(struct drm_device *dev,
1088                         struct radeon_framebuffer *rfb,
1089                         struct drm_mode_fb_cmd2 *mode_cmd,
1090                         struct drm_gem_object *obj)
1091 {
1092         int ret;
1093         rfb->obj = obj;
1094         ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
1095         if (ret) {
1096                 rfb->obj = NULL;
1097                 return ret;
1098         }
1099         drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
1100         return 0;
1101 }
1102
1103 static int
1104 radeon_user_framebuffer_create(struct drm_device *dev,
1105                                struct drm_file *file_priv,
1106                                struct drm_mode_fb_cmd2 *mode_cmd,
1107                                struct drm_framebuffer **res)
1108 {
1109         struct drm_gem_object *obj;
1110         struct radeon_framebuffer *radeon_fb;
1111         int ret;
1112
1113         obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1114         if (obj ==  NULL) {
1115                 dev_err(dev->device, "No GEM object associated to handle 0x%08X, "
1116                         "can't create framebuffer\n", mode_cmd->handles[0]);
1117                 return -ENOENT;
1118         }
1119
1120         radeon_fb = malloc(sizeof(*radeon_fb), DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1121         if (radeon_fb == NULL) {
1122                 drm_gem_object_unreference_unlocked(obj);
1123                 return (-ENOMEM);
1124         }
1125
1126         ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
1127         if (ret) {
1128                 free(radeon_fb, DRM_MEM_DRIVER);
1129                 drm_gem_object_unreference_unlocked(obj);
1130                 return ret;
1131         }
1132
1133         *res = &radeon_fb->base;
1134         return 0;
1135 }
1136
1137 static void radeon_output_poll_changed(struct drm_device *dev)
1138 {
1139         struct radeon_device *rdev = dev->dev_private;
1140         radeon_fb_output_poll_changed(rdev);
1141 }
1142
1143 static const struct drm_mode_config_funcs radeon_mode_funcs = {
1144         .fb_create = radeon_user_framebuffer_create,
1145         .output_poll_changed = radeon_output_poll_changed
1146 };
1147
1148 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1149 {       { 0, "driver" },
1150         { 1, "bios" },
1151 };
1152
1153 static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1154 {       { TV_STD_NTSC, "ntsc" },
1155         { TV_STD_PAL, "pal" },
1156         { TV_STD_PAL_M, "pal-m" },
1157         { TV_STD_PAL_60, "pal-60" },
1158         { TV_STD_NTSC_J, "ntsc-j" },
1159         { TV_STD_SCART_PAL, "scart-pal" },
1160         { TV_STD_PAL_CN, "pal-cn" },
1161         { TV_STD_SECAM, "secam" },
1162 };
1163
1164 static struct drm_prop_enum_list radeon_underscan_enum_list[] =
1165 {       { UNDERSCAN_OFF, "off" },
1166         { UNDERSCAN_ON, "on" },
1167         { UNDERSCAN_AUTO, "auto" },
1168 };
1169
1170 static int radeon_modeset_create_props(struct radeon_device *rdev)
1171 {
1172         int sz;
1173
1174         if (rdev->is_atom_bios) {
1175                 rdev->mode_info.coherent_mode_property =
1176                         drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1177                 if (!rdev->mode_info.coherent_mode_property)
1178                         return -ENOMEM;
1179         }
1180
1181         if (!ASIC_IS_AVIVO(rdev)) {
1182                 sz = DRM_ARRAY_SIZE(radeon_tmds_pll_enum_list);
1183                 rdev->mode_info.tmds_pll_property =
1184                         drm_property_create_enum(rdev->ddev, 0,
1185                                             "tmds_pll",
1186                                             radeon_tmds_pll_enum_list, sz);
1187         }
1188
1189         rdev->mode_info.load_detect_property =
1190                 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1191         if (!rdev->mode_info.load_detect_property)
1192                 return -ENOMEM;
1193
1194         drm_mode_create_scaling_mode_property(rdev->ddev);
1195
1196         sz = DRM_ARRAY_SIZE(radeon_tv_std_enum_list);
1197         rdev->mode_info.tv_std_property =
1198                 drm_property_create_enum(rdev->ddev, 0,
1199                                     "tv standard",
1200                                     radeon_tv_std_enum_list, sz);
1201
1202         sz = DRM_ARRAY_SIZE(radeon_underscan_enum_list);
1203         rdev->mode_info.underscan_property =
1204                 drm_property_create_enum(rdev->ddev, 0,
1205                                     "underscan",
1206                                     radeon_underscan_enum_list, sz);
1207
1208         rdev->mode_info.underscan_hborder_property =
1209                 drm_property_create_range(rdev->ddev, 0,
1210                                         "underscan hborder", 0, 128);
1211         if (!rdev->mode_info.underscan_hborder_property)
1212                 return -ENOMEM;
1213
1214         rdev->mode_info.underscan_vborder_property =
1215                 drm_property_create_range(rdev->ddev, 0,
1216                                         "underscan vborder", 0, 128);
1217         if (!rdev->mode_info.underscan_vborder_property)
1218                 return -ENOMEM;
1219
1220         return 0;
1221 }
1222
1223 void radeon_update_display_priority(struct radeon_device *rdev)
1224 {
1225         /* adjustment options for the display watermarks */
1226         if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1227                 /* set display priority to high for r3xx, rv515 chips
1228                  * this avoids flickering due to underflow to the
1229                  * display controllers during heavy acceleration.
1230                  * Don't force high on rs4xx igp chips as it seems to
1231                  * affect the sound card.  See kernel bug 15982.
1232                  */
1233                 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1234                     !(rdev->flags & RADEON_IS_IGP))
1235                         rdev->disp_priority = 2;
1236                 else
1237                         rdev->disp_priority = 0;
1238         } else
1239                 rdev->disp_priority = radeon_disp_priority;
1240
1241 }
1242
1243 /*
1244  * Allocate hdmi structs and determine register offsets
1245  */
1246 static void radeon_afmt_init(struct radeon_device *rdev)
1247 {
1248         int i;
1249
1250         for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1251                 rdev->mode_info.afmt[i] = NULL;
1252
1253         if (ASIC_IS_DCE6(rdev)) {
1254                 /* todo */
1255         } else if (ASIC_IS_DCE4(rdev)) {
1256                 /* DCE4/5 has 6 audio blocks tied to DIG encoders */
1257                 /* DCE4.1 has 2 audio blocks tied to DIG encoders */
1258                 rdev->mode_info.afmt[0] = malloc(sizeof(struct radeon_afmt),
1259                     DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1260                 if (rdev->mode_info.afmt[0]) {
1261                         rdev->mode_info.afmt[0]->offset = EVERGREEN_CRTC0_REGISTER_OFFSET;
1262                         rdev->mode_info.afmt[0]->id = 0;
1263                 }
1264                 rdev->mode_info.afmt[1] = malloc(sizeof(struct radeon_afmt),
1265                     DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1266                 if (rdev->mode_info.afmt[1]) {
1267                         rdev->mode_info.afmt[1]->offset = EVERGREEN_CRTC1_REGISTER_OFFSET;
1268                         rdev->mode_info.afmt[1]->id = 1;
1269                 }
1270                 if (!ASIC_IS_DCE41(rdev)) {
1271                         rdev->mode_info.afmt[2] = malloc(sizeof(struct radeon_afmt),
1272                             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1273                         if (rdev->mode_info.afmt[2]) {
1274                                 rdev->mode_info.afmt[2]->offset = EVERGREEN_CRTC2_REGISTER_OFFSET;
1275                                 rdev->mode_info.afmt[2]->id = 2;
1276                         }
1277                         rdev->mode_info.afmt[3] = malloc(sizeof(struct radeon_afmt),
1278                             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1279                         if (rdev->mode_info.afmt[3]) {
1280                                 rdev->mode_info.afmt[3]->offset = EVERGREEN_CRTC3_REGISTER_OFFSET;
1281                                 rdev->mode_info.afmt[3]->id = 3;
1282                         }
1283                         rdev->mode_info.afmt[4] = malloc(sizeof(struct radeon_afmt),
1284                             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1285                         if (rdev->mode_info.afmt[4]) {
1286                                 rdev->mode_info.afmt[4]->offset = EVERGREEN_CRTC4_REGISTER_OFFSET;
1287                                 rdev->mode_info.afmt[4]->id = 4;
1288                         }
1289                         rdev->mode_info.afmt[5] = malloc(sizeof(struct radeon_afmt),
1290                             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1291                         if (rdev->mode_info.afmt[5]) {
1292                                 rdev->mode_info.afmt[5]->offset = EVERGREEN_CRTC5_REGISTER_OFFSET;
1293                                 rdev->mode_info.afmt[5]->id = 5;
1294                         }
1295                 }
1296         } else if (ASIC_IS_DCE3(rdev)) {
1297                 /* DCE3.x has 2 audio blocks tied to DIG encoders */
1298                 rdev->mode_info.afmt[0] = malloc(sizeof(struct radeon_afmt),
1299                     DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1300                 if (rdev->mode_info.afmt[0]) {
1301                         rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1302                         rdev->mode_info.afmt[0]->id = 0;
1303                 }
1304                 rdev->mode_info.afmt[1] = malloc(sizeof(struct radeon_afmt),
1305                     DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1306                 if (rdev->mode_info.afmt[1]) {
1307                         rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1308                         rdev->mode_info.afmt[1]->id = 1;
1309                 }
1310         } else if (ASIC_IS_DCE2(rdev)) {
1311                 /* DCE2 has at least 1 routable audio block */
1312                 rdev->mode_info.afmt[0] = malloc(sizeof(struct radeon_afmt),
1313                     DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1314                 if (rdev->mode_info.afmt[0]) {
1315                         rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1316                         rdev->mode_info.afmt[0]->id = 0;
1317                 }
1318                 /* r6xx has 2 routable audio blocks */
1319                 if (rdev->family >= CHIP_R600) {
1320                         rdev->mode_info.afmt[1] = malloc(sizeof(struct radeon_afmt),
1321                             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
1322                         if (rdev->mode_info.afmt[1]) {
1323                                 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1324                                 rdev->mode_info.afmt[1]->id = 1;
1325                         }
1326                 }
1327         }
1328 }
1329
1330 static void radeon_afmt_fini(struct radeon_device *rdev)
1331 {
1332         int i;
1333
1334         for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1335                 free(rdev->mode_info.afmt[i], DRM_MEM_DRIVER);
1336                 rdev->mode_info.afmt[i] = NULL;
1337         }
1338 }
1339
1340 int radeon_modeset_init(struct radeon_device *rdev)
1341 {
1342         int i;
1343         int ret;
1344
1345         drm_mode_config_init(rdev->ddev);
1346         rdev->mode_info.mode_config_initialized = true;
1347
1348         rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1349
1350         if (ASIC_IS_DCE5(rdev)) {
1351                 rdev->ddev->mode_config.max_width = 16384;
1352                 rdev->ddev->mode_config.max_height = 16384;
1353         } else if (ASIC_IS_AVIVO(rdev)) {
1354                 rdev->ddev->mode_config.max_width = 8192;
1355                 rdev->ddev->mode_config.max_height = 8192;
1356         } else {
1357                 rdev->ddev->mode_config.max_width = 4096;
1358                 rdev->ddev->mode_config.max_height = 4096;
1359         }
1360
1361         rdev->ddev->mode_config.preferred_depth = 24;
1362         rdev->ddev->mode_config.prefer_shadow = 1;
1363
1364         rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1365
1366         ret = radeon_modeset_create_props(rdev);
1367         if (ret) {
1368                 return ret;
1369         }
1370
1371         /* init i2c buses */
1372         radeon_i2c_init(rdev);
1373
1374         /* check combios for a valid hardcoded EDID - Sun servers */
1375         if (!rdev->is_atom_bios) {
1376                 /* check for hardcoded EDID in BIOS */
1377                 radeon_combios_check_hardcoded_edid(rdev);
1378         }
1379
1380         /* allocate crtcs */
1381         for (i = 0; i < rdev->num_crtc; i++) {
1382                 radeon_crtc_init(rdev->ddev, i);
1383         }
1384
1385         /* okay we should have all the bios connectors */
1386         ret = radeon_setup_enc_conn(rdev->ddev);
1387         if (!ret) {
1388                 return ret;
1389         }
1390
1391         /* init dig PHYs, disp eng pll */
1392         if (rdev->is_atom_bios) {
1393                 radeon_atom_encoder_init(rdev);
1394                 radeon_atom_disp_eng_pll_init(rdev);
1395         }
1396
1397         /* initialize hpd */
1398         radeon_hpd_init(rdev);
1399
1400         /* setup afmt */
1401         radeon_afmt_init(rdev);
1402
1403         /* Initialize power management */
1404         radeon_pm_init(rdev);
1405
1406         radeon_fbdev_init(rdev);
1407         drm_kms_helper_poll_init(rdev->ddev);
1408
1409         return 0;
1410 }
1411
1412 void radeon_modeset_fini(struct radeon_device *rdev)
1413 {
1414         radeon_fbdev_fini(rdev);
1415         free(rdev->mode_info.bios_hardcoded_edid, DRM_MEM_KMS);
1416         radeon_pm_fini(rdev);
1417
1418         if (rdev->mode_info.mode_config_initialized) {
1419                 radeon_afmt_fini(rdev);
1420                 drm_kms_helper_poll_fini(rdev->ddev);
1421                 radeon_hpd_fini(rdev);
1422                 DRM_UNLOCK(rdev->ddev); /* Work around lock recursion. dumbbell@ */
1423                 drm_mode_config_cleanup(rdev->ddev);
1424                 DRM_LOCK(rdev->ddev);
1425                 rdev->mode_info.mode_config_initialized = false;
1426         }
1427         /* free i2c buses */
1428         radeon_i2c_fini(rdev);
1429 }
1430
1431 static bool is_hdtv_mode(const struct drm_display_mode *mode)
1432 {
1433         /* try and guess if this is a tv or a monitor */
1434         if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1435             (mode->vdisplay == 576) || /* 576p */
1436             (mode->vdisplay == 720) || /* 720p */
1437             (mode->vdisplay == 1080)) /* 1080p */
1438                 return true;
1439         else
1440                 return false;
1441 }
1442
1443 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1444                                 const struct drm_display_mode *mode,
1445                                 struct drm_display_mode *adjusted_mode)
1446 {
1447         struct drm_device *dev = crtc->dev;
1448         struct radeon_device *rdev = dev->dev_private;
1449         struct drm_encoder *encoder;
1450         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1451         struct radeon_encoder *radeon_encoder;
1452         struct drm_connector *connector;
1453         struct radeon_connector *radeon_connector;
1454         bool first = true;
1455         u32 src_v = 1, dst_v = 1;
1456         u32 src_h = 1, dst_h = 1;
1457
1458         radeon_crtc->h_border = 0;
1459         radeon_crtc->v_border = 0;
1460
1461         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1462                 if (encoder->crtc != crtc)
1463                         continue;
1464                 radeon_encoder = to_radeon_encoder(encoder);
1465                 connector = radeon_get_connector_for_encoder(encoder);
1466                 radeon_connector = to_radeon_connector(connector);
1467
1468                 if (first) {
1469                         /* set scaling */
1470                         if (radeon_encoder->rmx_type == RMX_OFF)
1471                                 radeon_crtc->rmx_type = RMX_OFF;
1472                         else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1473                                  mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1474                                 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1475                         else
1476                                 radeon_crtc->rmx_type = RMX_OFF;
1477                         /* copy native mode */
1478                         memcpy(&radeon_crtc->native_mode,
1479                                &radeon_encoder->native_mode,
1480                                 sizeof(struct drm_display_mode));
1481                         src_v = crtc->mode.vdisplay;
1482                         dst_v = radeon_crtc->native_mode.vdisplay;
1483                         src_h = crtc->mode.hdisplay;
1484                         dst_h = radeon_crtc->native_mode.hdisplay;
1485
1486                         /* fix up for overscan on hdmi */
1487                         if (ASIC_IS_AVIVO(rdev) &&
1488                             (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1489                             ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1490                              ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1491                               drm_detect_hdmi_monitor(radeon_connector->edid) &&
1492                               is_hdtv_mode(mode)))) {
1493                                 if (radeon_encoder->underscan_hborder != 0)
1494                                         radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1495                                 else
1496                                         radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1497                                 if (radeon_encoder->underscan_vborder != 0)
1498                                         radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1499                                 else
1500                                         radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1501                                 radeon_crtc->rmx_type = RMX_FULL;
1502                                 src_v = crtc->mode.vdisplay;
1503                                 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1504                                 src_h = crtc->mode.hdisplay;
1505                                 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1506                         }
1507                         first = false;
1508                 } else {
1509                         if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1510                                 /* WARNING: Right now this can't happen but
1511                                  * in the future we need to check that scaling
1512                                  * are consistent across different encoder
1513                                  * (ie all encoder can work with the same
1514                                  *  scaling).
1515                                  */
1516                                 DRM_ERROR("Scaling not consistent across encoder.\n");
1517                                 return false;
1518                         }
1519                 }
1520         }
1521         if (radeon_crtc->rmx_type != RMX_OFF) {
1522                 fixed20_12 a, b;
1523                 a.full = dfixed_const(src_v);
1524                 b.full = dfixed_const(dst_v);
1525                 radeon_crtc->vsc.full = dfixed_div(a, b);
1526                 a.full = dfixed_const(src_h);
1527                 b.full = dfixed_const(dst_h);
1528                 radeon_crtc->hsc.full = dfixed_div(a, b);
1529         } else {
1530                 radeon_crtc->vsc.full = dfixed_const(1);
1531                 radeon_crtc->hsc.full = dfixed_const(1);
1532         }
1533         return true;
1534 }
1535
1536 /*
1537  * Retrieve current video scanout position of crtc on a given gpu.
1538  *
1539  * \param dev Device to query.
1540  * \param crtc Crtc to query.
1541  * \param *vpos Location where vertical scanout position should be stored.
1542  * \param *hpos Location where horizontal scanout position should go.
1543  *
1544  * Returns vpos as a positive number while in active scanout area.
1545  * Returns vpos as a negative number inside vblank, counting the number
1546  * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1547  * until start of active scanout / end of vblank."
1548  *
1549  * \return Flags, or'ed together as follows:
1550  *
1551  * DRM_SCANOUTPOS_VALID = Query successful.
1552  * DRM_SCANOUTPOS_INVBL = Inside vblank.
1553  * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1554  * this flag means that returned position may be offset by a constant but
1555  * unknown small number of scanlines wrt. real scanout position.
1556  *
1557  */
1558 int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, int *vpos, int *hpos)
1559 {
1560         u32 stat_crtc = 0, vbl = 0, position = 0;
1561         int vbl_start, vbl_end, vtotal, ret = 0;
1562         bool in_vbl = true;
1563
1564         struct radeon_device *rdev = dev->dev_private;
1565
1566         if (ASIC_IS_DCE4(rdev)) {
1567                 if (crtc == 0) {
1568                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1569                                      EVERGREEN_CRTC0_REGISTER_OFFSET);
1570                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1571                                           EVERGREEN_CRTC0_REGISTER_OFFSET);
1572                         ret |= DRM_SCANOUTPOS_VALID;
1573                 }
1574                 if (crtc == 1) {
1575                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1576                                      EVERGREEN_CRTC1_REGISTER_OFFSET);
1577                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1578                                           EVERGREEN_CRTC1_REGISTER_OFFSET);
1579                         ret |= DRM_SCANOUTPOS_VALID;
1580                 }
1581                 if (crtc == 2) {
1582                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1583                                      EVERGREEN_CRTC2_REGISTER_OFFSET);
1584                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1585                                           EVERGREEN_CRTC2_REGISTER_OFFSET);
1586                         ret |= DRM_SCANOUTPOS_VALID;
1587                 }
1588                 if (crtc == 3) {
1589                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1590                                      EVERGREEN_CRTC3_REGISTER_OFFSET);
1591                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1592                                           EVERGREEN_CRTC3_REGISTER_OFFSET);
1593                         ret |= DRM_SCANOUTPOS_VALID;
1594                 }
1595                 if (crtc == 4) {
1596                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1597                                      EVERGREEN_CRTC4_REGISTER_OFFSET);
1598                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1599                                           EVERGREEN_CRTC4_REGISTER_OFFSET);
1600                         ret |= DRM_SCANOUTPOS_VALID;
1601                 }
1602                 if (crtc == 5) {
1603                         vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1604                                      EVERGREEN_CRTC5_REGISTER_OFFSET);
1605                         position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1606                                           EVERGREEN_CRTC5_REGISTER_OFFSET);
1607                         ret |= DRM_SCANOUTPOS_VALID;
1608                 }
1609         } else if (ASIC_IS_AVIVO(rdev)) {
1610                 if (crtc == 0) {
1611                         vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1612                         position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1613                         ret |= DRM_SCANOUTPOS_VALID;
1614                 }
1615                 if (crtc == 1) {
1616                         vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1617                         position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1618                         ret |= DRM_SCANOUTPOS_VALID;
1619                 }
1620         } else {
1621                 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1622                 if (crtc == 0) {
1623                         /* Assume vbl_end == 0, get vbl_start from
1624                          * upper 16 bits.
1625                          */
1626                         vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1627                                 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1628                         /* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1629                         position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1630                         stat_crtc = RREG32(RADEON_CRTC_STATUS);
1631                         if (!(stat_crtc & 1))
1632                                 in_vbl = false;
1633
1634                         ret |= DRM_SCANOUTPOS_VALID;
1635                 }
1636                 if (crtc == 1) {
1637                         vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1638                                 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1639                         position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1640                         stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1641                         if (!(stat_crtc & 1))
1642                                 in_vbl = false;
1643
1644                         ret |= DRM_SCANOUTPOS_VALID;
1645                 }
1646         }
1647
1648         /* Decode into vertical and horizontal scanout position. */
1649         *vpos = position & 0x1fff;
1650         *hpos = (position >> 16) & 0x1fff;
1651
1652         /* Valid vblank area boundaries from gpu retrieved? */
1653         if (vbl > 0) {
1654                 /* Yes: Decode. */
1655                 ret |= DRM_SCANOUTPOS_ACCURATE;
1656                 vbl_start = vbl & 0x1fff;
1657                 vbl_end = (vbl >> 16) & 0x1fff;
1658         }
1659         else {
1660                 /* No: Fake something reasonable which gives at least ok results. */
1661                 vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
1662                 vbl_end = 0;
1663         }
1664
1665         /* Test scanout position against vblank region. */
1666         if ((*vpos < vbl_start) && (*vpos >= vbl_end))
1667                 in_vbl = false;
1668
1669         /* Check if inside vblank area and apply corrective offsets:
1670          * vpos will then be >=0 in video scanout area, but negative
1671          * within vblank area, counting down the number of lines until
1672          * start of scanout.
1673          */
1674
1675         /* Inside "upper part" of vblank area? Apply corrective offset if so: */
1676         if (in_vbl && (*vpos >= vbl_start)) {
1677                 vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
1678                 *vpos = *vpos - vtotal;
1679         }
1680
1681         /* Correct for shifted end of vbl at vbl_end. */
1682         *vpos = *vpos - vbl_end;
1683
1684         /* In vblank? */
1685         if (in_vbl)
1686                 ret |= DRM_SCANOUTPOS_INVBL;
1687
1688         return ret;
1689 }